[fatbird]

Scuttlebutt is that it was an executive-wide decision based on the coming renegotiation of their 5 year agreement with Google regarding Maps. Google has been letting iOS maps lag behind Android maps (e.g., Android has turn-by-turn navigation, iOS maps didn't), so Apple was understandably not excited about renewing that agreement, and leaving themselves very vulnerable to one of their biggest competitors. But they didn't have something comparable, so they pushed a weak maps app early to catch Google off-guard--and they did. Google didn't have an app ready in the app store to replace the one they lost in the OS.

That's my synthesis of the analysis of a bunch of Apple watchers, so take it with a bowl of salt. But it makes sense to me.